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Shop 872 air compressor from 24 trusted brands including VADEN ORIGINAL, Arnott, FEBI BILSTEIN. Compare prices, check vehicle compatibility, and get free delivery on orders over £50.
Also known as: Compressed-air system compressor, Compressor, compressed-air system, Compressed Air Compressor, Brake Compressor
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OEM & aftermarket air compressor from top brands — compare prices, check fitment, order with free delivery
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Commonly searched OE numbers fitting Air Compressor from the TecDoc catalogue.
The compressed-air system compressor — also referred to as the air compressor or brake compressor — is a belt- or gear-driven piston pump found on heavy commercial vehicles, buses, and some large SUVs. It feeds pressurised air to the pneumatic brake system, air suspension, and ancillaries such as air horns. A faulty compressor leads to extended air-tank build times, insufficient brake reserve pressure, and air suspension faults. The compressor is a safety-critical component on vehicles that rely on air brakes — a failed unit will trigger the brake warning buzzer once tank pressure drops below the minimum threshold. CarParts247 stocks replacement compressed-air system compressors for common commercial platforms.
Air brake systems include pressure governors and low-pressure warning devices that alert the driver before brake performance is compromised. Recognising early symptoms avoids roadside breakdowns and prohibitions.
The compressed-air compressor on commercial vehicles should be inspected at each major service for head gasket condition, inlet and outlet valve integrity, and oil carry-over levels measured at the air dryer. Replace the compressor as an assembly when internal wear is confirmed — reconditioning is rarely economical on high-pressure units.
Yes. "Air Compressor" and "Compressed-air system compressor" refer to the same car part. Other common names include Compressed-air system compressor, Compressor, compressed-air system, Compressed Air Compressor. The part is the same regardless of which name is used.
Most air brake systems operate between 6.5 and 9.5 bar. The governor cuts the compressor out when the upper limit is reached and restarts it when pressure falls to the lower limit. Deviations outside this band indicate governor or compressor problems.
The mechanical fitting is within the scope of a competent mechanic. However, work on air brake systems must be validated by a qualified technician and the vehicle subjected to a full brake efficiency test before returning to service.
Blocked cooling fins, low engine coolant temperature (on water-cooled compressors), excessive back-pressure in the discharge line, and worn piston rings allowing combustion gases to enter the compression chamber are the most common causes.
Inspect at every major service (annually or per the vehicle manufacturer's interval). Full overhaul or replacement is typically triggered by measurements of oil carry-over exceeding OEM limits, usually tested at the air dryer output.
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Common original equipment numbers linked to replacement-part pages.
